Fastener-inserting tool



Patented Aug. 1 0, 1926 'sYLvns'rnn n. GOOKIN,

"or oiirnonivmsseoi-rusnrrs, .zassmnon 'ro UNETED snon 'rmcnmnnyoonnonnrron, or I ATERsom-nnw :rnRsn'Y, A CORPORATION on NEW EERSEY. V

' FASTENER-INSERTING 'TOOL.

Application filed Jfanuaijy 14, 1924. Serial No. 686,107.

"l is invention relates to devices for in:

serting fasteners :and is illustrated as enrbodied in a setting tool adapted to set blind or invisible eyelets in the manufacture of boots and shoes.

As these terms are understood in the trade, blind eyelets areinserted with the flanges of the eyelets upon the outside of a shoe and ivith the entering ends of the eyelet barrels clenched between adjacent layers of the material of the shoe upper so that the prongs of the eyelets cannot be seen upon the inside ofthe shoe and the facing or lining-of the shoe is left perfectly smooth, While invisible eyelet-ears inserted with their flanges lying upon the lining or facing of the shoe upper'and With their entering ends clenched between the layers of material so that the eyelets do not show upon the out side of the finished shoe. VVhile this inven tion is-applicable to both'blind and invisible eyele'ting for the purpose of convenience it will be herein described with reference to the latter. v

At the presentti'ine and for a number of years past'inost invisibleeyeletin'g has been done with machines of the type which inserts the eyelets one at a time successively in a single row, each-machine "being providedwith a setting tool arranged to be introduced from one side of the shoe-upper and having a clenching shoulder for; led and arranged to be positioned between the upper leather and the adjacent layer 'of material (ordinarily an eyelet stay) so that the en tering end of each eyelet barrel, introduced fr'ointhe other side of the material, is progressively expanded and forced o'utvvardly between-the layers'of-meterial, and is finally clenchedupon the eyelet stay, the setting tool being subsequently Withdrawn from the material.

The'inost popular o'f-the 'lnachines of this type utilize a; combined punch and set to punch the lacing hole and clench the eyelet barrel. From this t follows that the clenching shoulder of the tool is substantially larger than the hole in the material into which-the tool is inserted; and the material is consequently stretched as it is forced past the clenching shoulder. indeed, when a machine having a separate punch and set is used, this same condition is ordinarily found. on account of the desire of the "manufacturer, for style reasons, to

keepthe lacing hole as small as possible. lniorder to meet this condition among other things, it was common practice prior to this invention to reduce the diameter of the setting toolj ust above the clenching shoulder, that is to say, on the side of thezclenching shoulder remote from the pilot or entering end of the tool. While this relieves the tension upon the leather during the setting operation and tends toprevent undesired enlargement of the lacing hole, it causes the tool to .pull the upper leather away from the other layers of the Work at'the time. that the tool is Withdrawn and results more or less cracking of the surface of the leather, at the same time giving the edge ofthe lacing hole a fuzzy or fibrous appearance which is much less desirable than the uninarred appearance. of the leather and the clean-cut lacing hole when the Work is performed with a setting tool which is cylindrical above its clenching-shoulder..

In-view 'of these facts, it is an object of the present invention "to improve such a setting tool so as to relieve the strain upon the leather during :thecl'enching operation so that the tool Will.not permanently stretch the lacing shole and atthe same tinie, Will not crack or otherwise near the leather-,or injure the clean cut hole origin ally punched. These conditions, I have found, may be satis'liedby a setting tool having a ,-cylindri'cal portion extending from its setting. shoulder,,the tension of the leather "being relieved during the 'Jcle'nching operation oneor preferably more interruptions in the cylindrical portion. As illustrated, the cylindrical portion of the set is interrupted in two places by a transverse hole extending through the cylindrical portion beyond adjacent to the setting shoulder. I With the aboveand other objects and features in view, the'invention will now be described in connection vzith the acconipa" ing drawings and pointed ou inthe cl, ,The figure of the draWinQ's is a perspec tive' view, 1011 "a much enlarged scale, of an invisible eyeleting tool embodying the. present invention.

The tool of the drawingsis provided with the usual pilot portion 6 into a.

clenching sho'ulderB, which is forniedat the lower end of a-cylindrical portion 10 car ried by a shanl: 11. The shank :1'1 'is'ada'pted 'to-beclainped-or otherwise secured to the tool-carrying member of an eyeleting machine of a usual type, for example a machine such as that disclosed in United States Letters Patent No. 1,228,768, granted June 5, 1917, on an application filed in the name of P. R. Glass. If the machine, like that of the patent referred to, utilizes a combined punch and set, the pilot of the tool will be tubular, as indicated at 12, terminating in a punching edge so that its lower end may serve as a punch, the pills revered by the punching operation passing upwardly through the bore of the tool. If, on the other hand, the tool is to be used in a machine having a separate punch and set, the pilot of the tool will be solid.

The pilot of this tool, in accordance with the present usual practice in invisible eyeleting, is inserted from one side of the work through the lacing hole punched by the entering end of the pilot (or by a separate punch if the tool is used in a machine having a separate punch and set), the eyelet being introduced in the usual way from the other side of the work. Thus the entering end of the eyelet barrel meets the clenching shoulder 8 of the tool between adjacent layers of the work and is progressively expanded and clenched in that position. In order to facilitate the passage of the clenching shoulder through the outer layer of the work or, as it may be alternatively stated, to facilitate the forcing of the outer layer of the work past the clenching shoulder of the tool, the cylindrical portion 10 of the tool is interrupted, for example by a hole 14 of substantial size drilled transversely therethrough or otherwise suitably formed beyond and adjacent to the clenching shoulder 8, that is on the side of the clenching shoulder farther from the entering end of the tool. This relieves the tension upon the outer layer of the work as that layer passes the clenching shoulder 8, to an extent that under many conditions is decidedly helpful, without at the same time cracking the finish of the upper leather or substantially impairing the cleancut appearance of the lacing hole.

Having described the invention, what I claim as new and desire to secure by Lette Patent of the United States is 1. A tool for inserting blind or invisible eyelets adapted to be inserted through one or more of a plurality of layers of material and having a clenching shoulder adapted to be positioned between adjacent layers of the material to'clench the entering ends of eyelet barrels between said adjacent layers, said tool having a cylindrical surface extending from the clenching shoulder and interrupted at one or more places to an extent sufficient to relieve the tension on,the layer or layers of the work through which the clenching shoulder passes. I

2. Atool for inserting barreled fasteners in a plurality of layers of material and clenching the ends of their barrels between adjacent layers of the material adapted to be inserted through a hole in one or more of the layers of material and having a clenching shoulder adapted to be positioned between adjacent layers of the material to clench the entering ends of fastener barrels between said. adjacent layers, said tool having a transverse hole of substantial size therethrough on the side of the clenching shoulder farther from the entering end of the tool.

3. A tool for inserting blind or invisible eyelets adapted to be inserted through one or more of a plurality of layers of material and having a clenching shoulder adapted to be positioned bet-ween adjacent layers of the material to clench the entering ends of eyelet barrels between said adjacent layers, said tool having a cylindrical portion extending from the clenching shoulder on the side farther from the entering end of the tool and a hole of substantial size extending transversely through the cylindrical portion adjacent to the clenching shoulder.

l. A tool for inserting blind or invisible eyelets having a pilot portion merging into a clenching shoulder, said tool being adapted to be inserted through one or more of a plu- 'ality of layers of material to locate the clenching shoulder between adjacent layers of the material in position to clench the entering ends of eyelet barrels between said adjacent layers, and said tool having a cylindrical portion extending from the clenching shoulder on the side of the clenching shoulder away from the pilot, with a transverse hole of substantial size through said cylindrical portion adjacent to the clenching shoulder.

5. A tool for inserting blind or invisible eyelets comprising a combined punch and set having a pilot terminating at one end in a punching edge and merging at its other end into a. clenching shoulder constructed and arranged to be passed through onevor more of the layers of the work to clench the barrels of the eyelets between the layers, said tool having a cylindrical portion extending from the clenching shoulder on the side of the clenching shoulder away from the pilot, said pilot and cylindrical portion being tubular and having provision forthe passage therethrough of the pills severed by the punching operation and said tool also having a transverse hole therethrough adjacent to the clenching shoulder of a size sufficient to relieve the tension on the layer or layers through which the clenching shoulder is passed.

In testimony whereof I have name to this specification.

SYLVESTER L. G'OOKIN.

signed my 

